#extension .extension{
    width: 1600px;
    height: 580px;
    margin: 15px auto;
}

#hot .hot{
    width: 1600px;
    margin: 30px auto;
}
/* 推广图片 */
#promotion-pic{
    width:100%;
    background:#f8f8f8;
    height: 700px;
}

#promotion-picture{
    width: 1910px;
    margin: 0 auto;
    background:#f8f8f8;
}

.banner {
    width: 1600px;
    height: 623px;
    margin: 20px auto;
    position: relative;
}

.banner img {
    width: 100%;
    height: 100%;
    position: absolute;
    left: 0;
    top: 0;
    display: none;
    border-radius:20px;
}

.banner img.show {
    display: block;
}


/* 众筹制造 */
#extension{
    height: 650px;
    margin-top: -15px;
    padding-top: 15px;
    background: #f3f3f3;
}

/* 标题 */
#retrieval_txt{
    font-size: 28px;
}

#retrieval_txt ul{
    float: right;
    display: flex;
    justify-content: space-around;
}

#retrieval_txt ul li{
    font-size: 18px;
    padding: 0 20px;
    padding-top: 15px;
}

#retrieval_txt .txt:hover{
    color: red;
}

/* 内容 */
#content_display{
    justify-content: flex-start;
    width: 1600px;
}

.collection{
    width: 90px;
    height: 30px;
    background: rgb(255, 255, 255);
    border-radius: 30px;
    line-height: 30px;
    position: relative;
    top: 50px;
    left: 270px;
}

.collection img{
    width: 25px;
    height: 25px;
}

.project_text{
    width: 380px;
    height: 200px;
    margin: 0 auto;
    margin-top: -20px;
    background: white;
    border-radius: 0 0 10px 10px;
}

.collection .number{
    font-size: 23px;
    color: rgb(250, 69, 69);
}

.content_display{
    
    width: 380px;
    height: 550px;
    border-radius:0 0 8px 8px;
}

.project_image img{
    width: 380px;
    height: 300px;
    border-radius:15px 15px 0 0;
}

.project_title{
    width: 340px;
    font-size: 23px;
    text-align: left;
    margin: 0 auto;
    margin-top: -10px;
    line-height: 30px;
}

.project_intro{
    display: flex;
    margin-left: 20px;
}

.target,.target span{
    font-size: 18px;
}

.state{
    margin-left: 100px;
}

.txt_sprite{
    display: block;
    width: 70px;
    height: 30px;
    background: rgb(250, 69, 69);
    line-height: 30px;
    margin-top: 7px;
    color: white;
    border-radius: 8px;
}

.project_schedule{
    width: 340px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
}

.num,.til{
   display: block;
}

.til{
    line-height: 5px;
    color: rgb(121, 118, 118);
}

/* 热门项目 */
#hot{
    margin-top: -30px;
    padding-top: 5px;
    background: #f8f8f8;
}

#hot-txt{
    font-size: 28px;
}


#hot_display{
    width: 1600px;
}

/* 查看更多项目 */
#more .btn_more{
    width: 500px;
    height: 50px;
    letter-spacing:20px;
    color: rgb(250, 69, 69);
    border: 1px solid rgb(250, 69, 69);
}